The two stars sing along to “Montage,” performed by indie rockers Andy Hull and Robert McDowell of Manchester Orchestra, who are also responsible for the rest of the film’s soundtrack. Both Dano and Radcliffe contributed vocals to the track.

Swiss Army Man, the Sundance pick that made headlines which contained the words “farting” and “corpse,” tells the story of a young man, played by Dano, stranded on a desert island. His only companion ends up being a magical dead body, portrayed of course by Radcliffe.

Following the release of the soundtrack on June 25, the film hits theatres July 1.